常见程序OEP处代码

菜鸟编程 十五楼的鸟儿 1582浏览 0评论

觉得不错的文章,内容比较适合偶这样的菜鸟~

Borland Delphi 6.0 - 7.0
00509CB0 > $ 55 PUSH EBP
00509CB1 . 8BEC MOV EBP,ESP
00509CB3 . 83C4 EC ADD ESP,-14
00509CB6 . 53 PUSH EBX
00509CB7 . 56 PUSH ESI
00509CB8 . 57 PUSH EDI
00509CB9 . 33C0 XOR EAX,EAX
00509CBB . 8945 EC MOV DWORD PTR SS:[EBP-14],EAX
00509CBE . B8 20975000 MOV EAX,unpack.00509720
00509CC3 . E8 84CCEFFF CALL unpack.0040694C


Microsoft Visual C++ 6.0
00496EB8 >/$ 55 PUSH EBP ; (初始 cpu 选择)
00496EB9 |. 8BEC MOV EBP,ESP
00496EBB |. 6A FF PUSH -1
00496EBD |. 68 40375600 PUSH Screensh.00563740
00496EC2 |. 68 8CC74900 PUSH Screensh.0049C78C ; SE 处理程序安装
00496EC7 |. 64:A1 0000000>MOV EAX,DWORD PTR FS:[0]
00496ECD |. 50 PUSH EAX
00496ECE |. 64:8925 00000>MOV DWORD PTR FS:[0],ESP
00496ED5 |. 83EC 58 SUB ESP,58


Microsoft Visual C++ 6.0 [Overlay] E语言
00403831 >/$ 55 PUSH EBP
00403832 |. 8BEC MOV EBP,ESP
00403834 |. 6A FF PUSH -1
00403836 |. 68 F0624000 PUSH Nisy521.004062F0
0040383B |. 68 A44C4000 PUSH Nisy521.00404CA4 ; SE 处理程序安装
00403840 |. 64:A1 0000000>MOV EAX,DWORD PTR FS:[0]
00403846 |. 50 PUSH EAX
00403847 |. 64:8925 00000>MOV DWORD PTR FS:[0],ESP


Microsoft Visual Basic 5.0 / 6.0
00401FBC > 68 D0D44000 push dumped_.0040D4D0
00401FC1 E8 EEFFFFFF call
00401FC6 0000 add byte ptr ds:[eax],al
00401FC8 0000 add byte ptr ds:[eax],al
00401FCA 0000 add byte ptr ds:[eax],al
00401FCC 3000 xor byte ptr ds:[eax],al
00401FCE 0000 add byte ptr ds:[eax],al


BC++
0040163C > $ /EB 10 JMP SHORT BCLOCK.0040164E
0040163E |66 DB 66 ; CHAR 'f'
0040163F |62 DB 62 ; CHAR 'b'
00401640 |3A DB 3A ; CHAR ':'
00401641 |43 DB 43 ; CHAR 'C'
00401642 |2B DB 2B ; CHAR '+'
00401643 |2B DB 2B ; CHAR '+'
00401644 |48 DB 48 ; CHAR 'H'
00401645 |4F DB 4F ; CHAR 'O'
00401646 |4F DB 4F ; CHAR 'O'
00401647 |4B DB 4B ; CHAR 'K'
00401648 |90 NOP
00401649 |E9 DB E9
0040164A . |98E04E00 DD OFFSET BCLOCK.___CPPdebugHook
0040164E > \A1 8BE04E00 MOV EAX,DWORD PTR DS:[4EE08B]
00401653 . C1E0 02 SHL EAX,2
00401656 . A3 8FE04E00 MOV DWORD PTR DS:[4EE08F],EAX
0040165B . 52 PUSH EDX
0040165C . 6A 00 PUSH 0 ; /pModule = NULL
0040165E . E8 DFBC0E00 CALL ; \GetModuleHandleA
00401663 . 8BD0 MOV EDX,EAX


Dasm:
00401000 >/$ 6A 00 PUSH 0 ; /pModul
e = NULL

00401002 |. E8 C50A0000 CALL ; \GetModuleHandleA
00401007 |. A3 0C354000 MOV DWORD PTR DS:[40350C],EAX
0040100C |. E8 B50A0000 CALL ; [GetCommandLineA
00401011 |. A3 10354000 MOV DWORD PTR DS:[403510],EAX
00401016 |. 6A 0A PUSH 0A ; /Arg4 = 0000000A
00401018 |. FF35 10354000 PUSH DWORD PTR DS:[403510] ; |Arg3 = 00000000
0040101E |. 6A 00 PUSH 0 ; |Arg2 = 00000000
00401020 |. FF35 0C354000 PUSH DWORD PTR DS:[40350C] ; |Arg1 = 00000000

文章内容来自[loc=http://bbs.chinapyg.com/viewthread.php?tid=7235]ChinaPYG[/loc]。

对于学习脱壳的朋友来说,这些程序的OEP的特征一定要熟记。否则脱来脱去,找规律,看教程。如果连这些软件的入口地址都不清楚,那什么都是空谈。 BY:Nisy


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